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Short answers to the questions people ask about room and workplace temperatures, with the sources to check them.

Featured guideWorkplace temperature law

Is there a legal maximum working temperature in the UK?

No. There is no legal maximum temperature for workplaces in the UK, but the law says indoor workplace temperatures must be “reasonable” and the Health and Safety Executive (HSE) treats heat as a hazard that employers must assess and control.

No legal maximumHSE: there is no maximum temperature for workplaces. Indoor temperatures must be reasonable. HSE, Temperature in the workplace: what the law says

Read the guide5 min readLast checked 1 November 2026
UK workplace temperatures: suggested minimums, proposed maximums and no legal maximumA thermometer scale from 10 to 34 °C. HSE suggests at least 16 °C for most indoor work, or 13 °C for strenuous work. The TUC has proposed a legal maximum of 30 °C, or 27 °C for strenuous work, but these are proposals, not law. There is no legal maximum.No legal maximum1012141618202224262830323413 °C: HSE's suggested minimumfor strenuous work16 °C: HSE's suggested minimumfor most indoor work27 °C: TUC's proposed maximumfor strenuous work. Proposed, not law30 °C: TUC's proposed maximum.Proposed, not law

Quick answers

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